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https://issues.apache.org/jira/browse/HBASE-2946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924433#action_12924433
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HBase Review Board commented on HBASE-2946:
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Message from: "Jonathan Gray" <[email protected]>
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This is an automatically generated e-mail. To reply, visit:
http://review.cloudera.org/r/1088/
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Review request for hbase, stack and khemani.
Summary
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Adds a new Increment class that allows multiple columns (each w/ own increment
amount) in a single row being incremented in one call.
The big wins here are being able to do multiple columns in a row in a single
RPC and having it be appended/synced to the WAL in a single call.
The current trade-off is that you lose atomicity to readers (ie. this does not
currently use RWCC). Eventually it could but for the current use case I am
building this for, it's okay like this.
This addresses bug HBASE-2946.
http://issues.apache.org/jira/browse/HBASE-2946
Diffs
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trunk/src/main/java/org/apache/hadoop/hbase/client/HTable.java 1026930
trunk/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java
1026930
trunk/src/main/java/org/apache/hadoop/hbase/client/Increment.java
PRE-CREATION
trunk/src/main/java/org/apache/hadoop/hbase/io/HbaseObjectWritable.java
1026930
trunk/src/main/java/org/apache/hadoop/hbase/ipc/HRegionInterface.java 1026930
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 1026930
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
1026930
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/MemStore.java
1026930
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 1026930
trunk/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
1026930
trunk/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
1026930
Diff: http://review.cloudera.org/r/1088/diff
Testing
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Added TestFromClientSide.testIncrement() which adds some client-side tests of
Increment (and mixing w/ original icv call). That passes and most the way
through a test suite run.
Thanks,
Jonathan
> Increment multiple columns in a row at once
> -------------------------------------------
>
> Key: HBASE-2946
> URL: https://issues.apache.org/jira/browse/HBASE-2946
> Project: HBase
> Issue Type: New Feature
> Components: client, regionserver
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
>
> Currently there is no way to do multiple increments to a single row in one
> RPC. This jira is about adding an HTable and HRegionInterface method to
> increment multiple columns within a single row at once.
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